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AtCoder AGC004E Salvage Robots (DP)

AtCoder AGC031D A Sequence of Permutations (群论置换快速幂)

AtCoder AGC037E Reversing and Concatenating

AtCoder AGC030B Tree Burning

Codeforces 482E ELCA (LCT)

HDU 6089 Rikka with Terrorist (线段树)

HDU 6136 Death Podracing (堆)

AtCoder AGC032D Rotation Sort (DP)

AtCoder AGC036C GP 2 (组合计数)

BZLJ 3203 Luogu P3299 [SDOI2013]保护出题人 (凸包斜率优化二分)

HDU 6741 MUV LUV UNLIMITED (博弈论)

AtCoder AGC032F One Third (组合计数DP概率期望微积分)

AtCoder AGC035F Two Histograms (组合计数容斥原理)

AtCoder AGC039F Min Product Sum (容斥原理组合计数DP)

AtCoder AGC029E Wandering TKHS

AtCoder AGC033F Adding Edges (图论)

AtCoder AGC030E Less Than 3

Codeforces 516D Drazil and Morning Exercise (栈二分)

Codeforces 685C Optimal Point (二分不同类型距离的相互转换)

Codeforces 1110G Tree-Tac-Toe (博弈论)